ENT Flashcards
If you see speech delay in an infant or toddler, what should you suspect?
Hearing loss
What are some clues to hearing loss in older children?
- Ignoring commands
2. Increased volume of TV or music
What are the 2 types of hearing loss?
- Conductive
2. Sensorineural
What occurs when sound fails to progress to the cochlea?
Conductive hearing loss
Where can obstruction occur in conductive hearing loss?
Anywhere from external canal to ossicles
What is the most common cause of conductive hearing loss?
Effusion (usually due to OM)
Effusion is present in the absence of inflammation
Which type of hearing loss is often correctable with surgery or hearing devices?
Conductive
*Sensorineural are less-often correctable
What is needed to facilitate language development in children with all forms of hearing loss?
EI
What syndromes is hearing loss associated with?
- CHARGE
2. Syndromes involving cleft lip and palate
If you have a patients with an external or middle ear malformation, what else should you consider?
Craniofacial, renal, or inner ear malformations
What causes the most severe degree of conductive hearing loss?
Small, malformed ears (microtia or aural atresia)
What can large perforations from trauma result in?
Significant conductive hearing loss
What is post-taumatic conductive hearing loss usually associated with (besides perforation)?
Disruption of ossicles themselves
What is tympanosclerosis?
Scarring on TM (usually after recurrent OM)… results in minimal conductive hearing loss
What is the most common cause of conductive hearing loss?
OM with effusion
What is the result of keratinization of the epithelial cells in the middle ear?
Cholesteatoma
9 year old body, purulent discharge from right ear over several months despite several courses of antibiotics. On PE there is retraction of TM and sqamous debris. What next?
Refer to ENT… this is a cholesteatoma
How are cholesteatomas managed?
Surgical removal- Technically benign, but they expand and destroy bone
Late recognition of what ear findings is a major cause of permanent hearing loss?
Cholesteatome
Foul smeeling discharge despite treatment of a perforated TM is a clue to what?
Cholesteatoma
What causes sensorineural hearing loss?
Malfunction of cochlea and/or auditor nerve
What are 4 general causes of sensorineural hearing loss?
- Toxic (drugs)
- Infectious
- Genetic
- Traumatic (physical or acoustic)
What 2 diuretics can cause a temporary hearing loss?
Lasix and ethacrynic acid (Loops)
The combination of a loop diuretic with what other type of drug amplifies ototoxic effects?
Aminoglycosides